create_lt() -> {0}

[nothing.git] / src / game / level / platforms.c

diff --git a/src/game/level/platforms.c b/src/game/level/platforms.c
index e9f33edd28a5158ee6183632ca14d136b5d49048..41f215fb145e568cbb5a9ba523108c3689015a90 100644 (file)
--- a/src/game/level/platforms.c
+++ b/src/game/level/platforms.c
@@ -1,136 +1,77 @@
 #include <SDL2/SDL.h>
-#include <assert.h>
+#include "system/stacktrace.h"
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <errno.h>
 
 #include "platforms.h"
-#include "system/error.h"
 #include "system/lt.h"
+#include "system/lt/lt_adapters.h"
+#include "system/line_stream.h"
+#include "system/nth_alloc.h"
+#include "system/log.h"
+#include "game/level/level_editor/layer.h"
 
-struct platforms_t {
-    lt_t *lt;
+struct Platforms {
+    Lt lt;
 
-    rect_t *rects;
-    color_t *colors;
+    Rect *rects;
+    Color *colors;
     size_t rects_size;
 };
 
-platforms_t *create_platforms_from_stream(FILE *stream)
+Platforms *create_platforms_from_rect_layer(const RectLayer *layer)
 {
-    assert(stream);
+    trace_assert(layer);
 
-    lt_t *const lt = create_lt();
+    Lt lt = {0};
     if (lt == NULL) {
         return NULL;
     }
 
-    platforms_t *platforms = PUSH_LT(lt, malloc(sizeof(platforms_t)), free);
+    Platforms *platforms = PUSH_LT(
+        lt,
+        nth_calloc(1, sizeof(Platforms)),
+        free);
     if (platforms == NULL) {
-        throw_error(ERROR_TYPE_LIBC);
         RETURN_LT(lt, NULL);
     }
+    platforms->lt = lt;
 
-    platforms->rects_size = 0;
-    if (fscanf(stream, "%lu", &platforms->rects_size) == EOF) {
-        throw_error(ERROR_TYPE_LIBC);
-        RETURN_LT(lt, NULL);
-    }
+    platforms->rects_size = rect_layer_count(layer);
 
-    platforms->rects = PUSH_LT(lt, malloc(sizeof(rect_t) * platforms->rects_size), free);
+    platforms->rects = PUSH_LT(lt, nth_calloc(1, sizeof(Rect) * platforms->rects_size), free);
     if (platforms->rects == NULL) {
-        throw_error(ERROR_TYPE_LIBC);
         RETURN_LT(lt, NULL);
     }
+    memcpy(platforms->rects, rect_layer_rects(layer), sizeof(Rect) * platforms->rects_size);
 
-    platforms->colors = PUSH_LT(lt, malloc(sizeof(color_t) * platforms->rects_size), free);
+
+    platforms->colors = PUSH_LT(lt, nth_calloc(1, sizeof(Color) * platforms->rects_size), free);
     if (platforms->colors == NULL) {
-        throw_error(ERROR_TYPE_LIBC);
         RETURN_LT(lt, NULL);
     }
+    memcpy(platforms->colors, rect_layer_colors(layer), sizeof(Color) * platforms->rects_size);
 
-    char color[7];
-    for (size_t i = 0; i < platforms->rects_size; ++i) {
-        if (fscanf(stream, "%f%f%f%f%6s\n",
-                   &platforms->rects[i].x, &platforms->rects[i].y,
-                   &platforms->rects[i].w, &platforms->rects[i].h,
-                   color) < 0) {
-            throw_error(ERROR_TYPE_LIBC);
-            RETURN_LT(lt, NULL);
-        }
-        platforms->colors[i] = color_from_hexstr(color);
-    }
-
-    platforms->lt = lt;
-
-    return platforms;
-}
-
-platforms_t *create_platforms_from_file(const char *filename)
-{
-    assert(filename);
-
-    FILE *platforms_file = fopen(filename, "r");
-    if (platforms_file == NULL) {
-        throw_error(ERROR_TYPE_LIBC);
-        return NULL;
-    }
-
-    platforms_t *platforms = create_platforms_from_stream(platforms_file);
-    if (platforms != NULL) {
-        fclose(platforms_file);
-        return NULL;
-    }
-
-    fclose(platforms_file);
     return platforms;
 }
 
-void destroy_platforms(platforms_t *platforms)
+void destroy_platforms(Platforms *platforms)
 {
-    assert(platforms);
+    trace_assert(platforms);
     RETURN_LT0(platforms->lt);
 }
 
-int platforms_save_to_file(const platforms_t *platforms,
-                           const char *filename)
-{
-    assert(platforms);
-    assert(filename);
-
-    lt_t *const lt = create_lt();
-    if (lt == NULL) {
-        return -1;
-    }
-
-    FILE *platforms_file = PUSH_LT(lt, fopen(filename, "w"), fclose);
-
-    if (platforms_file == NULL) {
-        throw_error(ERROR_TYPE_LIBC);
-        RETURN_LT(lt, -1);
-    }
-
-    for (size_t i = 0; i < platforms->rects_size; ++i) {
-        if (fprintf(platforms_file, "%f %f %f %f\n",
-                    platforms->rects[i].x, platforms->rects[i].y,
-                    platforms->rects[i].w, platforms->rects[i].h) < 0) {
-            throw_error(ERROR_TYPE_LIBC);
-            RETURN_LT(lt, -1);
-        }
-    }
-
-    RETURN_LT(lt, 0);
-}
-
-int platforms_render(const platforms_t *platforms,
-                     const camera_t *camera)
+/* TODO(#450): platforms do not render their ids in debug mode */
+int platforms_render(const Platforms *platforms,
+                     Camera *camera)
 {
     for (size_t i = 0; i < platforms->rects_size; ++i) {
         if (camera_fill_rect(
                 camera,
                 platforms->rects[i],
                 platforms->colors[i]) < 0) {
-            throw_error(ERROR_TYPE_SDL2);
             return -1;
         }
     }
@@ -138,15 +79,28 @@ int platforms_render(const platforms_t *platforms,
     return 0;
 }
 
-void platforms_rect_object_collide(const platforms_t *platforms,
-                                   rect_t object,
-                                   int sides[RECT_SIDE_N])
+void platforms_touches_rect_sides(const Platforms *platforms,
+                                  Rect object,
+                                  int sides[RECT_SIDE_N])
 {
-    assert(platforms);
+    trace_assert(platforms);
+
+    for (size_t i = 0; i < platforms->rects_size; ++i) {
+        rect_object_impact(object, platforms->rects[i], sides);
+    }
+}
 
-    memset(sides, 0, sizeof(int) * RECT_SIDE_N);
+Vec platforms_snap_rect(const Platforms *platforms,
+                         Rect *object)
+{
+    trace_assert(platforms);
 
+    Vec result = vec(1.0f, 1.0f);
     for (size_t i = 0; i < platforms->rects_size; ++i) {
-        rect_object_impact(&object, &platforms->rects[i], sides);
+        if (rects_overlap(platforms->rects[i], *object)) {
+            result = vec_entry_mult(result, rect_snap(platforms->rects[i], object));
+        }
     }
+
+    return result;
 }